<!DOCTYPE html>
<meta charset="UTF-8">
<html>
<head>
	<title></title>
	<style type="text/css">

		#wrap{
			overflow: hidden;
			border: red solid 1px;
			height: 100px;
		}

		div.box {
			position: absolute;
			width: 100px;
			height: 100px;
			background: yellow;
			top: 0;
			left: 0;
		}
	</style>
</head>
<body>
<div id="wrap">
	<div class="box"></div>
	<div class="box"></div>
</div>
</body>
</html>